Light control



R. W. EBELING AND H. J. FANGER. LIGHT CONTROL.

APPLICATION FILED JAN. 24. 1921.

. 1 126,557. Patented Aug. 22, 1922.

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R. w. EBELING AND H. 1. FANGER. Y

LIGHT CONTROL.

APPLICATION FILED JAN. 24, 192l- 2 SHEETS-SHEET 2.

5 77% 79 7 j 108 v5 70 8 s 104 I I 6 o .1067 r I v I l M 3 6 10? ii 110v E TOR 109 I I obert w'%ei'm (I 5 lie yzan J; Fafigm 3. 4 ATTORNEYUNITED STATES PATENT OFFICE. ROBERT W. EBELING AND HERMALFJ. FANGER, FOAKLAND, CALIFORNIA, ASSIGNORS TO STANDARD LIGHT CONTROI COMPANY, OFOAKLAND, CALI- FORNIA.

LIGHT CONTROL.

To all whom-it may concer /3,: 3

Be it known that we, ROBERT W. EBELING and HERMAN J. FANGER, citizens ofthe United States, residing; at Oakland, in the county of Alameda andState of California have invented certain new and useful lmprovement-sin Light Controls, of which the following is a specification. 1

Our invention is an improved automatic controlling, switch particularlyuseful for intermittently lighting the lamps of electric signs.

Referring to the annexed drawing in which our invention is illustratedandwhich forms apart of this specification:

Figure 1 is a plan View of our switch.

Figure 2 is a left end elevation of our switch.

Figure 3 is a cross sectional view taken on line 3-3 of Figure 1.

Figure 1 is a vertical section of the dash pot.

Figure 5 is a cross sectional view on line 5-5 of Figure 1.

Figure 6 is a cross sectional view taken online 6+6 of Figure 1.

Figure 7 is a cross sectional View taken on line 77 of Figure 1.

Figure 8 is a cross sectional view taken on line 8+8 of Figural.

Figure 9 is a diagrammatic View of the switch circuit.

Figure 10 is an enlarged view of the up per end of the switch lever 15.1

In. the drawings 1 indicates a base of insulation. On said base ismounted a double magnet 5 including a pair of magnets 6 and 7, alaminated bar 8 being secured to the base 1 and bent upwardly, forminglaminated magnet cores 9 and. 10 which cores are bent over the top ofthe magnet coils toward each other. are secured at their ends to theends of the cores 9 and 10 by'screws 13 and 1 1, the bar 11 beingsecured at one side of said cores and the bar 1-2'being secured at theother side of the cores. A rock shaft is journaled' in the bars 11 and12 between the ends of the cores 9 and 10 and in a bearing ltifsecuredto the base 1. On the shaft 15 between the bars 11 and 12 is secured anarmature 17 formed with an overhanging arm 18 which overhangs the magnetcore 9. A spring 20 is coiled around the shaft 15 and is secured at oneend to Bars 11 and 12 Specification of Letters Patent. Patented A 1922hpplieation' filed January 24, 1921. Serial No. 439,463.

its lower end by hinge 2tto the base 1 between the magnet 21 and theshaft 15, a latch 25 being formed on the upper end of the, armatureforengaging an arm 26', secured on the shaft- 15, by set screw 27 tohold the shaft in position against the tension of spring 20 with thearmature arm 18 close to the magnet core 9. i A spring 28 is securedatone endto a post 29 and at its other end to the armature 23 fornormally holding the latch 25 in engagement with the arm 26. 'An arm 30is secured by a set screw 38zto the shaft 15 adapted to engage the topof a post 31 secured to the base 1 to limit the clockwise movement ofthe, shaft 15 under the influence of the spring 20. A disk 32 is securedon the shaft 15 by set screw 33, from one side of which disk projects apin 34:. A vertical plate 35 of insulation is mounted on the plate 1 ona stud 36 projecting from. the magnet core 22. A strap 37 is secured tothe outside of the plate 35' A rock shaft 38 is journ aled in the'stud3G, and strap 37. A time switch 40 includes two terminals 11 and -12mounted on the plate 1 contacts 4:3 and 1 1 mounted on said terminalsrespectively, and a switch lever secured on shaft 38 and carryingcontacts 16 and 4"? for engaging the contacts 41-3 and 41 1respectively. To the outside of the plate 35 is secured a bracket 418from which depends a spring; arm 19 for engaging the V-shaped upper endof the switch lever415, which has two angular surfaces 51 and 52. Acrank 53 is, secured on the outer end of the shaft 38 on which crank isa crank pin 54:. On the shaft 15 is loosely mounted a lever 55 on oneend of which is afork 56,, between the arms of which projects the crankpin 54. A dash pot 57 'is mounted on the base 1. The outer end of theplunger 58 is connected tothe other end 59 of the lever 55. The dashpot57 includes a rece' tacle 60 in which is a cylinder 61 open at the topand provided with a port 62 near the bottom, which port is controlled bya needle valve 63 mounted in the wall. of the receptacle (S0. A cap 64is screwed into the top of the receptacle and has an opening 65 throughwhich the plunger 58 e tends and reciprocatcs in the cylinder (31. A pin60 extends from the lever 55 toward the disk 32. A spring 67 is coiledaround the shaft 15 and its ends (38 and G9 engage opposite sides of thepins 3 1- and 60. A pair of switches 70 and 71 are mounted on thebase 1. The switch 70 includes a pair of clip contacts 72 and 73 securedto the base 1 and alever 7 1 of insulation secured to the shaft 15, tothe ends of which lever are secured switch lades 75 and 70 for engagingsaid contacts respectively. A. terminal 77 is secured to the blade 76and terminal 78 is connected to the blade 75. A wire '79 connects theterminals 77' and 78. A terminal 80 is mounted on the base 1 and a wire81 connects said terminal and the terminal 7 7. The switch 71 includes apair of clip contacts85 and 86 secured to the base 1 and a lever 87 ofinsulation se cured. to the shaft 15, to the ends of which lever aresecured. switch blades 88 and 89 for engaging said contactsrespectively. A terminal 90 is fixed to the blade 88 and a terminal 91is fixed to the blade 89, which terminals are connected by a wire 92. Aterminal 93 is secured to the base 1. and a wire 94 connects saidterminal and terminal 90.

Referring to Figure 9, mains and 101 are respectively connected toterminals 80 and 93. Lamp leads 102 and 1.03 are connected terminals 86and 78 and lamps 10 1 are connected to said leads. A lead 105 connectsterminal 86 and one end of the coil of magnet 7 which is connected bylead 106 to the coil of magnet 6. A lead 107 connects the coil of magnet6 and switch terminal 42. A lead 108 connects terminal. 85 and one endof the coil of magnet 21. and a lead 109 connects the other end of saidcoil and terminal 11. A lead 110 connects terminal 80 and switch arm 15.

The operation of our invention is as fol.- lows:

lVhen the parts are in the position shown in Figs. 2, 8, 6, 7, 8 and 9,current passes from main 100 through terminal 80, lead 110, switch arm45, switch terminal 11, lead 109, magnet 21, lead 108, terminal 85,through main 101, whereupon magnet 21 withdraws the latch 25 from arm 26and the spring 20 swings the shaft 15 clockwise. As the shaft turns inthis direction the pin 31 carries the spring arm 68 with it and thespring arm 69 engaging pin 66 causes the lever 55 and the switch levers70 and 71 to turn clockwise, but somewhat slower than the shaft onaccount of the action of the dash pct 57. The fork 56 engaging crank pin5 1 turns the switch arm 45 countcrcloclnvise until slightly over itsdead center, whereupon spring arm 19 engages surface 51 of the J-end ofsaid switch arm and swings the arm quickly until its contact 47 engagescontact 4.4, by which time the blades 76 and 89 engage the contact-s 7 3and S6 and light the lamps 10 1; the current passing through lead 100,terminal. 80, lead 81, terminal 77, lead 79, terminal 78, blade '76,contact 73, lead 103, lamps 101, lead 102, terminal 86, blade 89,terminal 91, lead 92, terminal 90, lead 91, terminal 93 and lead 101.Current then. passes from main 100 through terminal 8(, lead. 1.10,switch arm 15, contacts 4:7 and 4141, terminal 12, lead 107, magnets (5and 7, cad 105, blade 89, terminal 91., lead 92, terminal 90, lead 9 1-,terminal 98 and main 1.01, whereupon said magnets acting on armature 17turn the shaft 15 counterclockwisc until latch engages arm 26 and locksthe shaft 15 and disegage the blades 76 and 89 from the contacts 7 3 and86 breaking the lamp circuit, while the pin 31 swin the spring arm 69countcrclockwise and the arm 68 engaging pin 06 corrcspmidjiugly swingslever but the turning movement of said lever is retarded by the dash pct57. The lever fork 5G engaging crank pin 5i swings switch lever el-5clockwise until it is slightly over the dead center whereupon the springarm 19 engages surface 52 and swings the arm until. its contact 40engages contact 13. The above described operations are then repeated.

Having described our invention, we claim 1.21.11 automatic controllingswitch in.- cluding a shaft, two knife switches, the blade members ofsaid knife switches being secured on said shaft, a shaft turning magnet,the a 'mature of said magnet being secured to said shaft to turn theshaft in one direction when the magnet is energized, a spring forturning the shaft in the other direction, an arm on said shaft, a lockmagnet, a latch on the armature of said lock magnet for engaging saidarm when the shaft is turned by said shaft turning magnet to lock theshaft against turning in the other direction by said spring, a timingswitch for controlling both of said magnets to enable said shaft turningmagnet and said spring to oscillate said shaft and reverse said knifeswitches, and means actuated by said shaft for actuating said timingswitch.

2. An automatic controlling switch including a shaft, two knifeswitches, the blade members of said knife switches being secured on saidshaft, a shaft turning magnet, the armature of said magnet being securedto said shaft to turn the shaft in one direction when the magnet isenergized, a spring); for turning the shaft in the other direction, anarm on said shaft, a lock mag net, a latch on the armature of said lockmagnet for engaging said arm when the shaft is turned by said shaftturning magnet to lock the shaft against turning in the other directionby said spring, a lever loosely mounted on said shaft, a fork on saidlever, yielding means on the shaft for turning said lever with theshaft, and a timing switch for controlling both of said magnets toenable said shaft turning magnet and said spring to oscillate said shaftto reverse said knife switches, said timing switch comprising a shaft, acrank engaging said lever fork, a switch arm, two contacts on said arm,and two contacts to be respectively engaged by the contacts on theswitch arm.

3. An automatic controlling switch including a shaft, two knifeswitches,the blade members of said knife switches being secured on saidshaft, a shaft turning magnet,

the armature of said magnet being secured to said shaft to turn theshaft in one direction when the magnet is energized, a spring forturning the shaft inthe other direction, an arm on said shaft, a lockmagnet, a latch on the armature of said lock magnet for engaging saidarm when the shaft is turned by said shaft turning magnet to lock theshaft against turning in the other direction by said spring, a timingswitch for controlling both of said magnets to enable said shaft turningmagnet and said spring to oscillate said shaft and reverse said knifeswitches,

a lever loosely mounted on said shaft for actuating said timing switch,a dash pot connected to said lever to retard its action, a disk securedto said shaft, a pin on said disk, a pin on said lever, and a springcoiled around said shaft with its ends engaging opposite sides of saidpins whereby the lever is yieldingly driven by the shaft.

4. An automatic controlling switch including a shaft, two knifeswitches,the blade members of said knife switches being secured on saidshaft, a shaft turning magnet,

the armature of said magnet being secured to said shaft to turn theshaft in one di rection when the magnet is energized, a

spring for turning the shaft in the other direction, an arm on saidshaft, a lock magnet, a latch on the armature of said lock magnet forengaging said arm when the shaft is turned by said shaft turning magnetto lock the shaft against turning in the other direction by said spring,a timing switch for controlling both of said magnets to enable saidshaft turning magnet and said spring to oscillate said shaft and reversesaid knife switches, a lever loosely mounted switch arm having aV-shaped notch at one end and a springengaging said notch to close theswitch quickly when said arm passes its dead center in either direction.

5. An automatic controlling switch including ashaft, two knife switches,the blade members of said knife switches being secured on said shaft, ashaft turning magnet,

the armature of said magnet being secured to said shaft to turn theshaft in one direction when the magnet is energized, a spring forturning the shaft in the other direction, an arm on said shaft, a lockmagnet, a latch on the armature of said lock magnet for engaging saidarm when the shaft is turned by said shaft turning magnet to lock theshaft against turning in the other direction by said spring, a timingswitch for controlling both of said. magnets to enable said shaftturning magnet and said spring to oscillate said shaft and reverse saidknife switches, means actuated by said shaft for actuating said timingswitch, an arm adjustably secured to said shaft, and a stop engaged bysaid arm to limit the turning movementof the shaft under the influenceof said spring.

In testimony whereof we afiiX our signatures. v

ROBERT W. EBELING. HERMAN J. FANGER.

